@js290 Indeed, aside from naturally occurring in many foods (like plants, teas and coffees) it is essential for the body. symptoms of fluoride deficiency include tooth decay and osteoporosis. Thankfully if you drink coffee or teas you likely get enough. but I do not so I need to supplement it.
@js290 FYI, as I pointed out earlier in a thread the levels of fluoride in teas and coffee are significantly higher than it is in public water supplies where fluoride is added.